I have been on the "S cycle" since the 3GS. I have had my 4S for 2 years & obviously it is time to upgrade. I never expect the "S" version to be a major upgrade, more of an incremental upgrade. However, this phone is leaving me wanting a little bit more. I'm really excited about the internal upgrades. The 64 bit processor, 2X speed internals, and improved battery life are great. I could not care less about the fingerprint sensor. The biggest thing that I am disappointed in is the lack of a 128 GB option. Now, before the storage haters & iCloud/iTunes Match folks jump on me, I like my storage. I have a 64GB 4S & it is always full . Between apps, pictures, video (that I shot, not movies) and a boat load of music, I am maxed out. And hardly any of my music comes from (GASP) iTunes. To give us a 128 GB option would have put me in the "camp out in front of the Apple Store" crowd. I will likely upgrade because I have been waiting for it, but are there any other 4S owners out there just not really feeling the same urgency because the 5S is missing that one thing to put you over the top?